Porters are the people who call Southport their home, no matter what race they are, whether they be elven, aarakocran, or orc. Southport's culture comes from its trade with every other nation, borrowing many different things from the many cultures all across the world, though largely from their neighbors to the north, the Western Coalition and the Greyspine Kingdom. Porters are a people that celebrate their diversity, not caring what colour of Wyrmwight you are, not caring about your lineage, so long as you're able to bring something to the nation, they will accept you.
It's not strange to see many different styles of clothing, you may turn and see furs and clothing that can only be found and made in Vinado, and then you look right next to them and see the flowy fabrics and scarves of Dialecium. Porters are very hodge-podge and very eclectic in their appearances, and it all depends on who they trade with and what they deal in.